PDR 221

The Radius PDR 221 is an advanced digital data radio modem designed to offer wide area coverage for remote control telemetry and SCADA type network applications. Interface is via an RS232 port for data connection. The data radio can offer up to 19.2kbps on air data rate and is designed for both point to multi-point data telemetry networks and peer-to-peer networks in the VHF and UHF bands.

Benefits

Collision Avoidence Technology
Forward Error Correction
128 Bit Encryption
Remote Diagnostics & Programming
Adjustable Power
Exceptional Reciever Sensitivity
Selectable Master/Slave/Repeater Mode
Remote Frequency Change
Test/ Maintenance Functions
Message Routing
Real Time Radio System Monitoring
Ethernet Port
Dual RS232 Ports (High Data Rate)

Secure and Reliable
The PDR 221 data radio supports event triggered communication and has in-built collision management to maximize network throughput. The data radio can provide 128 bit encryption and provide FEC (Forward Error Correction) with inter-leaving that can recover even badly corrupted data messages. Receiver sensitivity is very high allowing exceptional recovery of signals. And just in case you cannot reach a destination data radio directly, you have the abitility to allocate one unit as a dedicated repeater in order to store and forward on the remote control telemetry or SCADA message.

Glossary of Terms
Some of the terms and abbreviations used on the website may be unfamiliar if you are new to digital radio systems. click here to see a glossary of terms explains many of the terms used in expalining our products.

Radio Networking
The following pages give reference to general radio networking equipment. terms and how to calcualte a "radio link budget". The information can be useful when planning a radio network, but is not essential for using the PDR 221. Please click here for further information

Technical Information
Radio Transceiver
Data Rates	4800/9600 @ 12.5 KHz 9600/19200 @ 25 KHz
Frequency Ranges	UHF 475 to 505 MHz UHF 440 to 470 MHz UHF 400 to 430 MHz UHF 360 to 390 MHz UHF 330 to 350 MHz VHF 140 to 174 MHz
Operation Modes	Half duplex, simplex
Modulation	4 FSK
Forward Error Correction	Yes, interleaving functionality
Collision Avoidance	Yes, configurable
Repeating	PDR 121 - Multi-repeating, up to 6 repeaters on one like PDR 221 - 1 repeater per system
No. of Remote Radios / Masters	PDR 121 - 120 PDR 221 - 255
Encryption	128-bit key XTEA cypher 32 character encryption key (PDR 121 only)
Radio Transmitter
Tx Power	VHF 0.1 to 5.0 W adjustable UHF 0.5 to 5.0 W factory set Higher powers available on request
Radio Receiver
Sensitivity	-107 to -114 dBM @ BER <10^-6depending on data rate and channel spacing
Networking Diagnostics
PDR 121 & 221	Software package Radius RND 100 gives RSSI, temperature etc.
Environmental
Temperature Operating Range	UHF -40^oC to +60^oC (-40^oF to +140^oF) VHF -25^oC to +75^oC (-13^oF to +167^oF)
Physical Dimensions
Size PDR 121 & PDR 221	H40 x W193 x D115 mm H1.6 x W7.6 x D4.5 inch
Weight	UHF: 600g (1.3lb) VHF: 754g (1.7Ib)
Housing Material	Aluminium
Connectors
Main Power Supply	12 V 2 pole, female
Battery Supply	12 V 2 pole, female
Antenna	BNC, female
Serial Port	RS 232 DB9 female, wired as DCE (modem) Data Rates 600 to 57000 bps Flow Control RTS/ CTS, DCD selectable VHF: 2 serial ports UHF: 1 serial port
Ethernet port	Only available on VHF version
Configuration	RJ12, female
Indications (LED)
LED Indicators	Main PWR, Radio R, Radio Tx, RS232 Rx, RS232 Tx, Configuration Mode, Carrier Detect, System Setect
Protocols
PDR 121	DNP3, IEC 870, RP570, COMLI, Modbus, Cooper/PG&E 2179 Telegyr 8979, DCSI, Hunt, Exoline, cactus, PRIP, Aquacom. Other protocols are avaliable upon request
PDR 221	Transparent, Manage nearly all current data protocols
Configuration Interface
Configuration Software	Standard Windows Terminal Software
Data Rate	Selectable 1200/9600/57600 bps

Downloads

PDR Product Brochure (A4) (1.86 MB)

PDR Product Brochure (A4) (German) (1.88 MB)

PDR Product Brochure (A4) (Russian) read only (2.67 MB)